Hi guys pretty new around here and I have a question on tyre pressures.

I have a 01 Disco Es V8 Auto with 16" BF Goodridge all terain KOs and I am unsure of the tyre pressure I should be running?

On my 81 Rangie I ran 35psi in the back and 28 in the front but when I run the same pressures in the Disco the front tyres look half flat. Its also my first set of BF tyres. The Disco book says 38 rear 28 front and the tyres only say 50psi max, so what do I run?

TIA